CN101590490A - A kind of line, bar rolling mill taper bush - Google Patents
A kind of line, bar rolling mill taper bush Download PDFInfo
- Publication number
- CN101590490A CN101590490A CNA2009103008555A CN200910300855A CN101590490A CN 101590490 A CN101590490 A CN 101590490A CN A2009103008555 A CNA2009103008555 A CN A2009103008555A CN 200910300855 A CN200910300855 A CN 200910300855A CN 101590490 A CN101590490 A CN 101590490A
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- Prior art keywords
- tapered sleeve
- rolling mill
- cylindrical shell
- taper bush
- bar rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 25
- 238000005242 forging Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 11
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 7
- 238000004043 dyeing Methods 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract 1
- 229910000734 martensite Inorganic materials 0.000 description 8
- 239000002585 base Substances 0.000 description 7
- 230000035882 stress Effects 0.000 description 7
- 238000003483 aging Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- -1 rough turn Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
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- Forging (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The present invention relates to the mounting technique of a kind of line, excellent cantilevered roll collar of rolling mill, especially relate to a kind of line, bar rolling mill taper bush that can effectively improve the contact condition between roll shaft, tapered sleeve, the collars.Comprise that one is provided with the cylindrical shell of tapered sleeve inner conical surface, the outer surface of cylindrical shell one end is a tapered sleeve outer contacting face, and the other end is provided with the release hangers, cylindrical shell release with hangers in the hole site be provided with internal gear; To the cylindrical shell other end 1/3rd, and be provided with annular groove from an end of cylindrical shell on tapered sleeve outer contacting face, the cross section of annular groove is an arc, and the degree of depth of its arc is 0.5～0.8mm, and the radius of arc is 5～8mm; The barrel outer surface adjacent with tapered sleeve outer contacting face is provided with noncontact face.Select for use heat-resisting martensitic stain less steel 0Cr17Ni4Cu4Nb to make raw material, carry out special die forging and fine finishining design.
Description
Technical field
The present invention relates to a kind of wire rod, bar steel rolling technical field, when especially relating to the installing and fixing of a kind of cantilevered roll collar of rolling mill, can effectively improve line, the bar rolling mill taper bush of the contact condition between its roll shaft, tapered sleeve, the collars.
Background technology
At present, taper bush assembling mode is used in installing and fixing of the line of high-speed rod, excellent cantilevered roll collar of rolling mill basically, it mainly is the keyless and bearing load of frictional force realization by faying face, and the friction of faying face and contact property are very important to the collars assembling.In traditional roll shaft, tapered sleeve, the collars assembling, the process that tapered sleeve is suppressed is: tapered sleeve was seated after the making a concerted effort of normal pressure axial thrust load that the frictional force and the roll shaft of the frictional force, collars and the tapered sleeve that overcome tapered sleeve and roll shaft under the axial compressive force effect acts on tapered sleeve, and formed equilibrium of forces.The pre-finishing mill group, mm finishing mill unit, reducing sizing mill group are the nucleus equipments of high-speed line, bar mill, the collars assembling axial compressive force of these cantilever rolling mills is important technical parameters of collars assembling.If assembling pressure is too high, collars easily causes and collapses roller under the acting in conjunction of the thermal expansion stress that alternate stress that interference erection stress, draught pressure cause and roll shaft temperature rise cause in the production; If assembling pressure is low excessively,, can cause that tapered sleeve falls to press because of not satisfying the roll torque transmission condition.
Taper sheath is as shown in Figure 6 stressed during pressurization.
Taper sheath is subjected to the pressure F of pressurizing tool
0Inwardly advance, strain takes place in taper sheath two side and collars and axle extruding, and the normal pressure of two side produces frictional force n and f, and the taper sheath stress balance closes and is:
F
0＝f+NcosA+nsin?A
In the formula, F
0Be the moulding pressure of pressurizing tool to taper sheath, N, F are the suffered normal pressure in taper sheath two side, the frictional force that n, f produce for the taper sheath two side, and A is a taper angle.
The collars assembling belongs to big load Static Contact, and the real contact area of its faying face is not only relevant with surface roughness, and is also relevant with ovality, the dimensional accuracy of collars, tapered sleeve and roll shaft.Higher ovality and dimensional accuracy, bright and clean surface help improving the real contact area of faying face.Simultaneously, make the distribution of contact of faying face even.Otherwise, the real contact area of faying face is reduced, the distribution of contact inequality.
The inboard front end of tapered sleeve 1/4～1/3 position in actual the use, because pressurization repeatedly, release, make it bad with the roll shaft contact condition, after water infiltrates, chloride in the water, fluoride, sulfide plays corrosiveness to the roll shaft and the tapered sleeve of stainless steel or structural alloy steel material, quicken its corrosion, permanent loose contact can appear in tapered sleeve front end and its roll shaft corresponding site, roll shaft, tapered sleeve, can not set up the necessary big load stiction of effective transmission between the collars, rolling middle tapered sleeve occurs and fall to press phenomenon, roll shaft, tapered sleeve, occur between the collars sliding relatively, make roll shaft badly damaged, the steel accident also can occur piling, or because effectively contact area is little, the tapered sleeve inboard wall stress is concentrated, and collars occurs and collapses the cracked phenomenon of roller.The general frequent replacing taper bush of manufacturer takes place for fear of above-mentioned accident.
Summary of the invention
When the objective of the invention is for the installing and fixing of the line that solves high-speed rod, excellent cantilevered roll collar of rolling mill, tapered sleeve fall to be pressed and collars collapses the problem of the cracked phenomenon of roller in rolling, a kind of reasonable in design is provided, adopt martensitic precipitation to make material, through special die forging base and fine-processing technique, increase its effective contact area, improve roll shaft, tapered sleeve, collars contact condition, improve product line, the bar rolling mill taper bush in service life.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: this line, bar rolling mill taper bush, comprise that one is provided with the cylindrical shell of tapered sleeve inner conical surface, the outer surface that it is characterized in that cylindrical shell one end is a tapered sleeve outer contacting face, the other end is provided with the release hangers, cylindrical shell release with hangers in the hole site be provided with internal gear; To the cylindrical shell other end 1/3rd, and be provided with annular groove from an end of cylindrical shell on tapered sleeve outer contacting face, the cross section of annular groove is an arc, and the degree of depth of its arc is 0.5～0.8mm, and the radius of arc is 5～8mm; The barrel outer surface adjacent with tapered sleeve outer contacting face is provided with noncontact face.The setting of annular groove can improve the contact condition of tapered sleeve and roll shaft bottom bound fraction, is effective and applying fully.
As preferably, described cylinder material adopts heat-resisting martensitic stain less steel 0Cr17Ni4Cu4Nb.With the structural alloy steel of traditional tapered sleeve material selection, different as 30CrNiMoA, 40CrNiMoA, 42CrMo etc.; The 0Cr17Ni4Cu4Nb steel is a kind of martensitic precipitation, and is many as not only requiring rustless property and corrosion resistance but also require parts such as high-intensity axle class, by reasonable control chemical composition and adjust heat treating regime, satisfies its performance requirement.
As preferably, the technological process that it is characterized in that the taper bush manufacturing is die forging base, rough turn, solution treatment, Ageing Treatment, smart cutting, grinding, dyeing inspection etc.
As preferably, it is characterized in that described die forging base contains following technology:
1) steel ingot is clamped down on 400 ℃ of rough forges;
2) furnace temperature is raised to 900 ℃ with the speed of 50 ℃/h;
3) furnace temperature is raised to 1180～1200 ℃ with the speed of 100 ℃/h;
4) open and forge 1100～1150 ℃ of temperature, final forging temperature 〉=900 ℃, forging ratio 〉=4.
Does the Technology for Heating Processing in the technological process of described taper bush manufacturing comprise: solution treatment, temperature 1040 as preferably? 0 ℃, Ageing Treatment, 400 ~ 650 ℃ of temperature.
As preferably, described dyeing inspection requires the face that is examined and gauge contact area more than or equal to 85%, and guarantees uninterruptedly.
As preferably, in the described smart cutting, release is with being provided with the transition cannelure between hangers and the noncontact face.Arc transition can be eliminated pressurization and release causes stress concentrated herein.
As preferably, in the described smart cutting, be provided with transition arc between tapered sleeve outer contacting face and the noncontact face.The same one identical, the arc transition stress of getting taper bush that can disappear is concentrated.
As preferably, the tapering of described tapered sleeve inner conical surface equates with the tapering of roll shaft.Veriform milling train or different taper fit is arranged.
As preferably, the profile of tooth of internal gear and the external tooth engagement of roll shaft upper end can prevent tapered sleeve slide relative with roll shaft after the roll shaft release, the damage roll shaft.
Implementation result of the present invention is: improve tapered sleeve effectively and contact effect with roll shaft, improve the service life of roll shaft and tapered sleeve.
Therefore, the present invention is a kind of reasonable in design, through special die forging base and fine-processing technique, increases its effective contact area, improves roll shaft, tapered sleeve, collars contact condition, improves product line, the bar rolling mill taper bush in service life.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 of the present invention is to schematic diagram.
Fig. 3 is a kind of contour structures schematic diagram of the present invention.
Fig. 4 is a kind of working state structure schematic diagram of the present invention.
Fig. 5 is the Forging Technology schematic diagram of steel ingot of the present invention.
Among the figure: 1. tapered sleeve outer contacting face, 2. noncontact face, 3. release is with hangers, 4. tapered sleeve inner conical surface, 5. internal gear, 6. annular groove, 7. transition cannelure, 8. transition arc, 9. collars, 10. roll shaft.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technical scheme of the present invention is described in further detail.
Present embodiment line, bar rolling mill taper bush comprise that one is provided with the cylindrical shell of tapered sleeve inner conical surface 4, and cylinder material adopts heat-resisting martensitic stain less steel 0Cr17Ni4Cu4Nb.
The 0Cr17Ni4CmNb steel is on Cr17 type stainless steel base, adds a kind of martensitic precipitation that intensified elements such as Cu, Nb are made.Its intensity is by the martensite phase transformation with in 400～650 ℃ of temperature ranges during timeliness, separates out carbide such as age-hardening phase rCu, NbC, M23C6 and produces that precipitation-hardening reaches.
This steel low-carbon (LC), Gao Ge, and cupric, nickel, niobium, its corrosion resistance than martensite steels such as Cr13 type and Cr23Ni4 for well, many as not only requiring rustless property and weak acid resistant, alkali, salt corrosion but also requiring high-intensity parts.
The technological process of taper bush manufacturing is provided with processes such as die forging base, rough turn, solution treatment, Ageing Treatment, smart cutting, grinding, dyeing inspection.
As shown in Figure 5, comprise following technology during the die forging base:
1) steel ingot is clamped down on 400 ℃ of rough forges by hand;
2) furnace temperature is raised to 900 ℃ with the speed of 50 ℃/h;
3) furnace temperature is raised to 1180～1200 ℃ with the speed of 100 ℃/h;
4) open and forge 1100～1150 ℃ of temperature, final forging temperature 〉=900 ℃, forging ratio 3～5
Because 0Cr17Ni4Cu4Nb steel hot-working character is good, heating-up temperature is unsuitable too high, but will in time melt down heating anneal after the edging, need carry out removing surface in case of necessity.
Can,, satisfy GB1220 by reasonable control chemical composition and adjustment heat treating regime? because 0Cr17Ni4Cu4Nb belongs to martensitic precipitation 4 to this steel performance demands.
After should noting solid solution aging, (ε-Cu), hardening constituents such as carbide NbC, M23C6 are organized as quenched martensite+aging martensitic, and have retained austenite to exist, and intensity is the highest after 480 ℃ of Ageing Treatment to separate out copper-rich phase.
Does the heat treatment aspect that taper bush is manufactured in the above technological process comprise: solution treatment, temperature 1040? 0 ℃, Ageing Treatment, 400 ~ 650 ℃ of temperature.
Dyeing inspection requires tested surface and gauge contact area more than or equal to 85%, and guarantees uninterrupted.
Referring to Fig. 1, Fig. 2, in rough turn, the smart cutting of taper bush, the outer surface of cylindrical shell one end is a tapered sleeve outer contacting face 1, the other end is provided with release hangers 3, cylindrical shell release with hangers 3 in the hole site be provided with internal gear 5, be 0.4 as the surface roughness of working face tapered sleeve outer contacting face 1 and inner conical surface 4, but be not more than 0.8.
To the cylindrical shell other end 1/3rd positions, and contact-making surface 1 is provided with annular groove 6 outside from an end of cylindrical shell, and the cross section of annular groove 6 is an arc, and generally about 0.5～0.8mm, the arc radius R of groove 6 generally gets 5～8mm to the depth H of its arc.
The barrel outer surface adjacent with tapered sleeve outer contacting face 1 is provided with noncontact face 2, processing one transition arc 8 between tapered sleeve outer contacting face 1 and the noncontact face 2.
As Fig. 3, be a kind of external form schematic diagram of the present invention, release is divided into the quartering with hangers 3 by circumference, and release is processed a transition cannelure 7 with between hangers 3 and the noncontact face 2.
During assembling, as shown in Figure 4, this taper bush roll shaft 10 1 ends of packing into, inner conical surface 4 cooperates with cone on the roll shaft 11, and the collars 9 of contact-making surface 1 place assembling outside gets final product.
The foregoing description is to explanation of the present invention, is not limitation of the invention, any structure after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (9)
1. a line, bar rolling mill taper bush, comprise that one is provided with the cylindrical shell of tapered sleeve inner conical surface, the outer surface that it is characterized in that described cylindrical shell one end is a tapered sleeve outer contacting face (1), and the other end is provided with release with hangers (3), cylindrical shell release with hangers (3) in the hole site be provided with internal gear (5); To the cylindrical shell other end 1/3rd, and be provided with annular groove (6) from an end of cylindrical shell on tapered sleeve outer contacting face (1), the cross section of annular groove (6) is an arc, and the degree of depth of its arc is 0.5～0.8mm, and the radius of arc is 5～8mm; The barrel outer surface adjacent with tapered sleeve outer contacting face (1) is provided with noncontact face (2).
2. a kind of line according to claim 1, bar rolling mill taper bush is characterized in that described cylinder material adopts heat-resisting martensitic stain less steel 0Cr17Ni4Cu4Nb.
3. a kind of line according to claim 1, bar rolling mill taper bush, the technological process that it is characterized in that the taper bush manufacturing are die forging base, rough turn, solution treatment, Ageing Treatment, smart cutting, grinding, dyeing inspection etc.
4. a kind of line according to claim 3, bar rolling mill taper bush is characterized in that described die forging base contains following technology:
1) steel ingot is clamped down on 400 ℃ of rough forges;
2) furnace temperature is raised to 900 ℃ with the speed of 50 ℃/h;
3) furnace temperature is raised to 1180～1200 ℃ with the speed of 100 ℃/h;
4) open and forge 1100～1150 ℃ of temperature, final forging temperature 〉=900 ℃, forging ratio 〉=4.
5. a kind of line according to claim 3, bar rolling mill taper bush is characterized in that the Technology for Heating Processing in the technological process of taper bush manufacturing comprises: solution treatment, 1040 ± 10 ℃ of temperature, Ageing Treatment, 400 ~ 650 ℃ of temperature.
6. a kind of line according to claim 3, bar rolling mill taper bush is characterized in that described dyeing inspection requirement and gauge contact area more than or equal to 85%, and guarantee uninterrupted.
7. according to claim 1 or 3 described a kind of lines, bar rolling mill taper bush, it is characterized in that release is with being provided with transition cannelure (7) between hangers (3) and the noncontact face (2) in the described smart cutting.
8. according to claim 1 or 3 described a kind of lines, bar rolling mill taper bush, it is characterized in that being provided with transition arc (8) between tapered sleeve outer contacting face (1) and the noncontact face (2) in the described smart cutting.
9. a kind of line according to claim 1, bar rolling mill taper bush is characterized in that the tapering of described tapered sleeve inner conical surface (4) equates with the tapering of roll shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103008555A CN101590490B (en) | 2009-03-13 | 2009-03-13 | Tapered bushing for line and bar rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103008555A CN101590490B (en) | 2009-03-13 | 2009-03-13 | Tapered bushing for line and bar rolling mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101590490A true CN101590490A (en) | 2009-12-02 |
| CN101590490B CN101590490B (en) | 2011-01-05 |
Family
ID=41405483
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103008555A Active CN101590490B (en) | 2009-03-13 | 2009-03-13 | Tapered bushing for line and bar rolling mill |
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| CN (1) | CN101590490B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151718A (en) * | 2010-12-02 | 2011-08-17 | 沈阳重型机械集团有限责任公司 | Simultaneous and quick aligning and locking device for multi-roll ring of section steel straightener |
| CN103272850A (en) * | 2013-05-20 | 2013-09-04 | 浙江朋诚科技有限公司 | High-speed mill roller box structure |
| CN105080964A (en) * | 2014-05-09 | 2015-11-25 | 北京中冶设备研究设计总院有限公司 | Reducing sizing mill with short roller body, four upright posts and no house for bars |
| CN105890484A (en) * | 2015-01-26 | 2016-08-24 | 鞍钢股份有限公司 | High-speed wire rod mill double-module taper sleeve inspection shaft and method |
| CN106863105A (en) * | 2017-01-22 | 2017-06-20 | 重庆市巴山液压附件厂有限公司 | A kind of convex key block grinding technics anti-offset for scout car jacking sleeve |
| CN112828046A (en) * | 2020-12-31 | 2021-05-25 | 汉威广园(广州)机械设备有限公司 | Taper sleeve and roller box comprising same |
| CN112845606A (en) * | 2020-12-31 | 2021-05-28 | 汉威广园(广州)机械设备有限公司 | Method for processing taper sleeve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE788862A (en) * | 1971-09-16 | 1973-01-02 | Krupp Gmbh | STALLION RING REMOVAL DEVICE |
| JPS632509A (en) * | 1986-06-19 | 1988-01-07 | Mitsubishi Metal Corp | Rolling mill |
| UA34405C2 (en) * | 2000-07-04 | 2004-06-15 | Ltd Liability Company Res And | Mill roll |
| CA2429264A1 (en) * | 2002-07-01 | 2004-01-01 | Michael J. Eldredge | Rolling mill roll assembly |
| CN201399474Y (en) * | 2009-03-13 | 2010-02-10 | 东阳市朋诚科技有限公司 | Conical bushing used for wire rolling mill and bar rolling mill |
-
2009
- 2009-03-13 CN CN2009103008555A patent/CN101590490B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151718A (en) * | 2010-12-02 | 2011-08-17 | 沈阳重型机械集团有限责任公司 | Simultaneous and quick aligning and locking device for multi-roll ring of section steel straightener |
| CN103272850A (en) * | 2013-05-20 | 2013-09-04 | 浙江朋诚科技有限公司 | High-speed mill roller box structure |
| CN105080964A (en) * | 2014-05-09 | 2015-11-25 | 北京中冶设备研究设计总院有限公司 | Reducing sizing mill with short roller body, four upright posts and no house for bars |
| CN105890484A (en) * | 2015-01-26 | 2016-08-24 | 鞍钢股份有限公司 | High-speed wire rod mill double-module taper sleeve inspection shaft and method |
| CN106863105A (en) * | 2017-01-22 | 2017-06-20 | 重庆市巴山液压附件厂有限公司 | A kind of convex key block grinding technics anti-offset for scout car jacking sleeve |
| CN106863105B (en) * | 2017-01-22 | 2019-02-12 | 重庆市巴山液压附件厂有限公司 | A kind of convex key block grinding technics anti-offset for scout car jacking sleeve |
| CN112828046A (en) * | 2020-12-31 | 2021-05-25 | 汉威广园(广州)机械设备有限公司 | Taper sleeve and roller box comprising same |
| CN112845606A (en) * | 2020-12-31 | 2021-05-28 | 汉威广园(广州)机械设备有限公司 | Method for processing taper sleeve |
| CN112845606B (en) * | 2020-12-31 | 2022-04-05 | 汉威广园(广州)机械设备有限公司 | Method for processing taper sleeve |
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| Publication number | Publication date |
|---|---|
| CN101590490B (en) | 2011-01-05 |
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Owner name: ZHEJIANG PENGCHENG TECHNOLOGIES CO., LTD. Free format text: FORMER NAME: DONGYANG PENGCHENG TECHNOLOGY CO., LTD. |
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Address after: 322104 Dongyang, Zhejiang City, Weishan City, the town of Huai Huai industrial function zone six Patentee after: Zhejiang Pengcheng Technologies Co., Ltd. Address before: 311401 No. 57 Nanjing Ning East Road, Zhejiang, Dongyang Patentee before: Dongyang Pengcheng Technology Co., Ltd. |
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Denomination of invention: Tapered bushing for line and bar rolling mill Effective date of registration: 20181012 Granted publication date: 20110105 Pledgee: Jinhua bank Limited by Share Ltd Dongyang branch Pledgor: Zhejiang Pengcheng Technologies Co., Ltd. Registration number: 2018330000308 |
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Date of cancellation: 20210427 Granted publication date: 20110105 Pledgee: Jinhua bank Limited by Share Ltd. Dongyang branch Pledgor: ZHEJIANG PENGCHENG TECHNOLOGIES Co.,Ltd. Registration number: 2018330000308 |
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Denomination of invention: A kind of taper bush for wire and rod mill Effective date of registration: 20210527 Granted publication date: 20110105 Pledgee: ZHEJIANG DONGYANG RURAL COMMERCIAL BANK Co.,Ltd. Pledgor: ZHEJIANG PENGCHENG TECHNOLOGIES Co.,Ltd. Registration number: Y2021330000476 |
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